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SageMath
E = EllipticCurve("sa1")
E.isogeny_class()
Elliptic curves in class 176400.sa
sage: E.isogeny_class().curves
LMFDB label | Cremona label | Weierstrass coefficients | j-invariant | Discriminant | Torsion structure | Modular degree | Faltings height | Optimality | CM discriminant |
---|---|---|---|---|---|---|---|---|---|
176400.sa1 | 176400gr4 | \([0, 0, 0, -6559875, 6466493250]\) | \(16581375\) | \(1882737888192000000\) | \([2]\) | \(4128768\) | \(2.5676\) | \(-28\) | |
176400.sa2 | 176400gr3 | \([0, 0, 0, -385875, 113447250]\) | \(-3375\) | \(-1882737888192000000\) | \([2]\) | \(2064384\) | \(2.2210\) | \(-7\) | |
176400.sa3 | 176400gr2 | \([0, 0, 0, -133875, -18852750]\) | \(16581375\) | \(16003008000000\) | \([2]\) | \(589824\) | \(1.5946\) | \(-28\) | |
176400.sa4 | 176400gr1 | \([0, 0, 0, -7875, -330750]\) | \(-3375\) | \(-16003008000000\) | \([2]\) | \(294912\) | \(1.2480\) | \(\Gamma_0(N)\)-optimal | \(-7\) |
Rank
sage: E.rank()
The elliptic curves in class 176400.sa have rank \(0\).
Complex multiplication
Each elliptic curve in class 176400.sa has complex multiplication by an order in the imaginary quadratic field \(\Q(\sqrt{-7}) \).Modular form 176400.2.a.sa
sage: E.q_eigenform(10)
Isogeny matrix
sage: E.isogeny_class().matrix()
The \(i,j\) entry is the smallest degree of a cyclic isogeny between the \(i\)-th and \(j\)-th curve in the isogeny class, in the LMFDB numbering.
\(\left(\begin{array}{rrrr} 1 & 2 & 7 & 14 \\ 2 & 1 & 14 & 7 \\ 7 & 14 & 1 & 2 \\ 14 & 7 & 2 & 1 \end{array}\right)\)
Isogeny graph
sage: E.isogeny_graph().plot(edge_labels=True)
The vertices are labelled with LMFDB labels.